PRECAUTIONS FOR MAINTENANCE 2.8.21 COOLING FAN AND BELT Be careful to the revolving parts and do not allow anyone to get too close to these parts, since clothes or parts of the body may get caught into them. If hands, clothes, or tools touch the fan blades or the belt, they may be cut, torn or seriously damaged; for this reason, avoid touching the revolving parts. RKA00210 2.8.22 WASTE MATERIALS Do not dispose of used oil in the sewer system, rivers, etc. Always put used oil in containers. Never drain the oil directly on- to the ground. Keep to the laws and regulations in force when disposing of harmful substances such as oil, fuel, solvents, used filters and batteries.
2.8.23 COMPRESSED AIR When carrying out cleaning with compressed air, there is a hazard of serious injury or property damage caused by flying particles. When using compressed air to clean elements or the radiator, always wear safety goggles, dust mask, gloves, and other protective equipment. 2.8.24 PRECAUTIONS FOR THE USE OF THE SYNTHETIC BIODEGRADA- BLE OIL TYPE HEES It is not possible to mix the synthetic biodegradable oil type HEES with ordinary hydraulic oils, since when the temperature increases insoluble compounds are generated, which are deposited on the filters and clog them (the maximum concentration of ordinary oil cannot exceed 1% of the total quantity of oil).
The biodegradable oil can be used only in the hydraulic system; it cannot be used for the endothermic engine, the transmissions, the braking system, etc. Before introducing the synthetic biodegradable oil in the hydraulic system, empty the system completely, discon- necting the cylinders and all the parts that may contain ordinary oil, and replace the drain filter with a new one. Start the engine and let it idle without using the work equipment, wait until the oil reaches a temperature of at least 40°C, then start moving the equipment, so that all the parts of the system are filled with oil. Stop the engine and check the oil level.
(See "3.3.1.2 CHECKS BEFORE STARTING" - " CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL"). 51